Adjustable pump head



Sept. 18, 1934. a. s. COATS 1,974,014

ADJUST ABLE PUMP HEAD Filed June 20, 1932 Y INVENTOR. Georoe 15' 6'00 tsBY ATTORNEYS.

Patented Sept. 18, 1934 1,974,014 EI S AB iI MP George floats, ,Visalia,Calif. sears 2011932, as were dCl airns. (011103-462) My inventionrelates to improvements in adjustable pump heads, and it consists of thecombinations, constructions and arrangements hereinafter described andclaimed.

d In deep well .turbinepumps, the driving shaft connected with the motorand with the runner lengthens through use and it is necessary to shortenthis length periodically in order that the runner will not contact withthe runner casing.

In order to overcome this, hollow motor shafts have been resorted to,and the solid shaft connected to the runner is received in the hollowshaft and is provided with an adjusting nut so that the solid shaft canbe moved axially in a vertical direction with respect to the hollowshaft. Hollow shaft motors are expensive.

It is the purpose of the present invention to provide novel means foruniformly lifting the entire motor casing and runner shaft so as tocompensate for the lengthening of the shaft and any wear that may havetaken place. The means for uniformly lifting the entire motor casing andrunner shaft does away with the necessity of using hollow motor shafts,although the device can be used with solid or hollow motor shafts.

After the motor and runner shaft have been adjusted, they can be securedin adjusted position. The device is extremely simple in construction andcan be adapted to standard equipment after making but a slightalteration.

Other objects and advantages will appear in the following specification,and the novel fea tures of the device will be particularly pointed outin the appended claims.

My invention is illustrated in the accompanying drawing forming a partof this application, in which Figure 1 is a vertical section through thede- 4 vice, portions being shown in elevation; and

Figure 2 is a perspective view of the adjustable pump head.

In carrying out my invention, I make use of a motor indicated generallyat 1, and I further .make use of a water outlet casing 2. The casing hasan outlet pipe 3 communicating therewith and a water pipe 4 that extendsdown to the pump, indicated generally at 5. The pump has a runner 6 thatis operatively connected to 5 .a drive shaft 7, and this shaft in turnis connected to the motor shaft 8 by means of a coupling 9. The motorshaft 8 may be solid or hollow. Since a solid motor shaft is lessexpensive, I prefer to use this type.

t Between the casing 2 and the motor 1, I dispose an adjustable pumphead indicated generally at 10'. This headis shown in perspective inFigure 2. The head comprises atop disc 11 that supliort the motorcasingand a bottornring 12 thatis connectedflto the disc 11 by legs 13. {1QThe ring 12 is threaded internally, as at 14, and is split at 15 and 16.Integral cars 17 and 18 are disposed at the ends of the split ringportions, and the ears are secured together by bolts 19 and 20, or othersuitable fastening means.

The casing 2 is provided with an integral flange 21, and this flange isthreaded externally, as at 22, for receiving the ring 12.

From the foregoing description of the various parts of the device, theoperation thereof may 79 be readily understood.

When assembling the device, the drive shaft 7 extends above the packinggland 23 in the top of the casing 2. The motor casing 1 secured to thedisc 11 by screws 2%, and the ad- (5 justable pump head 10 is mounted onthe flange 21 so that the threads 1 1 on the ring 12 mesh with thethreads 22 on the flange. The motor shaft 8 registers with the driveshaft 7 and is initially connected thereto by the coupling 9. 81) Theadjustable pump head may now be rotated with respect to the flange 21 soas to lower the motor casing l with respect to the casing 2. Thecoupling 9 may now be tightened so as to .raw the shafts 7 and 8 intoabutting relation. 8 5 The adjustable pump head 10 may be furtherrotated in either direction so as to properly position the runner 6 withrespect to the casing 25 of the pump 5. The bolts 19 and 29 are nowtightened so as to clamp the split ring 12 around the flange 21 andprevent accidental rotation. The device is now ready for use.

When the shaft 7 lengthens, the motor casing 1 can be uniformly raisedand carry with it the shaft until the runner 6 assumes the properposition in the casing 25. The raising of the motor 1 is accomplished byfirst loosening the bolts 19 and 20 and then'rotating the adjustablepump head through the desired number of degrees, after which the boltscan be tightened. The rotating of the pump head causes it to moveupwardly on the flange 21 and to move the motor casing l and the shaft 7vertically.

In this simple manner, the lengthening of the shaft 7 can be compensatedfor.

While I have shown only the preferred form of my invention, it should beunderstood that various changes or modifications may be made within thescope of the appended claims without departing from the spirit of theinvention.

I claim:

1. In combination, a pump casing, a runner disposed in the casing, avertical shaft connected to the runner and projecting above the casing,an adjustable pump head having a single means for vertically positioningthe casing, said single means including a threaded flange fixed to thecasing and having a threaded connection with the pump head, and a motorcarried by the adjustable head and being connected to the shaft, saidhead being adjustable for moving the motor, shaft and runner forproperly positioning the runner in the pump casing.

2. The combination with a pump casing and a motor, of an adjustable headsupporting the motor and having a single means for verticallypositioning the pump casing, said single means including a threadedflange fixed to the casing and having a threaded connection with thepump head,

3. In combination, a pump casing, a runner disposed in the casing, avertical shaft connected to the runner and projecting above the casing,an adjustable pump head having a single means for Vertically positioningthe casing, said single means including a threaded flange fixed to thecasing and having a threaded connection with the pump head, a motorcarried by the adjustable head and being connected to the shaft, saidhead being adjustable for moving the motor, shaft and runner forproperly positioning the runner in the pump casing, and means forlooking said head against movement.

4. The combination with a pump casing and a motor, of an adjustable headsupporting the motor and having a single means for verticallypositioning the pump casing, said single means including a threadedfiange fixed to the casing and having a threaded connection with thepump head, and means for locking said head against movement.

5. The combination with a pump casing having an annular threaded flangeand a motor, of an adjustable pump head supporting the motor and havinga threaded split ring receivable by the flange, and means for tighteningthe ring on the flange after the head has moved the motor into thedesired position.

GEORGE S. COATS,

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